Which of the following statements is true of proteins?
Proteins lose some or all of their normal activity if their three-dimensional structure is disrupted.
Proteins are composed of ribose, phosphate, and a nitrogen-containing base.
The activity of proteins is independent of temperature and pH.
Denaturation is usually reversible.
All proteins are enzymes.

The answer is Denaturation is reversible

Explanation:

Denaturation of proteins is the process whereby there is a disruption in the tertiary, quaternary or secondary structure of proteins which causes a conformation change in its action

denaturation is reversible, that is, the proteins can regain their native state when the denaturing influence is removed. This process can be called renaturation.

atomic number of carbon is 6

electronic configuration of carbon is 1s²2s²2p²

orbital diagram of c is as shown here in the image.